Dibromimetaani

Dibromimetaani
Tunnisteet
CAS-numero 74-95-3
PubChem CID 3024
SMILES C(Br)Br
Ominaisuudet
Molekyylikaava CH2Br2
Moolimassa 173,835 g/mol
Sulamispiste -52.7 °C
Kiehumispiste 97 °C
Tiheys 2,5 g/cm3
Liukoisuus veteen 1.,2 g/100 ml (15 °C)

Dibromimetaani on hiilen ja bromin yhdiste, jota kutsutaan myös nimillä metyleenidibromidi ja metyleenibromidi. Sen kemiallinen kaava on CH2Br2. Dibromimetaani on normaaliolosuhteissa olomuodoltaan väritöntä nestettä, joka liukene veteen 1,2 g/100 ml (15 °C). Yhdiste on palamatonta ja sen höyry on ilmaa raskaampaa. Dibromimetaanin moolimassa on 173,835 g/mol, sulamispiste -52,7 °C, kiehumispiste 97 °C, tiheys 2,5 g/cm3 ja CAS-numero 74-95-3.[1]

Dibromimetaania valmistetaan dikloorimetaanin, bromin ja alumiinin reaktiolla tai alumiinikloridin katalysoimana dikloorimetaanista ja vetybromidista. Reaktioissa muodostuu myös bromikloorimetaania. Dibromimetaania käytetään liuottimena polymerointireaktioissa ja mineraalien erotusprosesseissa, lähtöaineena lääkeaineiden synteeseissä ja palonsammutusaineena.[2][3][4]

Katso myös

Lähteet

  1. ↑ Dibromimetaani - kemikaalikortti ILO. Viitattu 30.7.2022. (englanniksi)
  2. ↑ David Ioffe & Ron Frim: "Bromine, Organic Compounds", teoksessa Kirk-Othmer Encyclopedia of Chemical Technology, John Wiley & Sons, New York, 2011.
  3. ↑ David Yoffe, Ron, Frim, Shmuel D. Ukeles, Michael J. Dagani, Henry J. Barda, Theodore J. Benya & David C. Sanders: "Bromine Compounds", Ullmann’s Encyclopedia of Industrial Chemistry, John Wiley & Sons, New York, 2013.
  4. ↑ Thomas Scott, Mary Eagleson: Concise encyclopedia chemistry, s. 648. Walter de Gruyter, 1994. ISBN 978-3110114515 (englanniksi)

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